Bearing capacity of two-layer soils of finite element analysis

• Main Authors: Lin, You-Yau, 林猷堯
• Other Authors: Chang Jui-Hung
• Format: Others
• Language: zh-TW
• Published: 1998
• Online Access: http://ndltd.ncl.edu.tw/handle/60376249894549767437

碩士 === 國立中央大學 === 土木工程學系 === 86 === This paper applies elastoplastic finite element method to analyze the problem of ultimate bearing capacity of strip surface footing over two-layer soils under the plane strain assumption. Eight nodes rectangular element is adopted and the Mohr-Coulomb failure criterion is used for simulating the elastoplastic stress-strain behavior of soil. Furthermore, displacement control of loading is applied. The major pattern of the problem of ultimate bearing capacity of two-layer soils is consisted of sandy soil overlain clay. This paper investigates the influences of finite element mesh, material parameter, boundary condition, and plastic flow rule on numerical convergence, compares with the experimental results to verify the conclusions obtained from numerical analysis, ensures the feasibility of numerical analysis. Finally, a non-dimensional design chart will be established as a reference of the problem of bearing capacity of shallow foundation.